Question

The gym has a total of 25 treadmills and stationary bikes. There are 7 more stationary bikes than treadmills.

a. Write a system of linear equations that represents this situation.

b. How many treadmills are in the gym?

c. How many stationary bikes are in the gym?

Answer 1

t+b=25
b=t+7
⇒ t+(t+7)=25
⇒2t+7=25

b. 2t+7=25
2t=25-7
2t=18
t=18:2
t=9

c. b=t+7=9+7=16